: Running loadstring(game:HttpGet(...)) on links from unknown sources is highly risky. Scripts on Pastebin can be updated by the author at any time to include "loggers" that can steal your Roblox account cookies or personal information.
If you wanted to add a basic Walkspeed feature to a script, the underlying Lua code would look like this:
: To add a specific feature like "Walkspeed" or "Infinite Jump," you can inject code that modifies the LocalPlayer character properties. Example: Adding a Walkspeed Slider
To "produce a feature" or add functionality to a script like this, you generally need to modify the source code at the URL or create a wrapper that adds new variables or functions before the loadstring executes. How to Add a Feature to a Roblox Script